On May 7, 2014, at 12:03 PM, Ian Hickson <[email protected]> wrote: > On Wed, 7 May 2014, Anne van Kesteren wrote: >> On Tue, May 6, 2014 at 7:19 PM, Wilson Page <[email protected]> wrote: >>> I'm unsure whether or not it is safe to use custom attributes without >>> the 'data-', I've heard mixed opinions. How do we know that chosen >>> attributes won't someday be global attributes? >> >> Yeah, we should figure something out here. From one perspective you've >> already namespaced your element by using a dash. However, given the >> existence of an ever growing set of global attributes you probably do >> not want to clash with those. >> >> Maybe we should allow any attribute as long as it contains a dash (and >> does not match a set of existing names)? Still seems somewhat >> suboptimal. > > Requiring a dash is pretty ugly. I would allow any attribute, and we'll > just have to be careful when introducing new global ones.
I don't think "being careful" is a sound strategy. How are you going to quantify the risk of adding a new global attribute in the future? I don't want us to depend on some random search engines to make a guess as to which names are safe to use. - R. Niwa
